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"""
SNMPv3, auth: SHA, privacy: AES128
++++++++++++++++++++++++++++++++++
Send a SNMP GET request
* with SNMPv3 with user 'usr-sha-aes', SHA auth and AES128 privacy protocols
* over IPv4/UDP
* to an Agent at 195.218.195.228:161
* for an OID in tuple form
This script performs similar to the following Net-SNMP command:
| $ snmpget -v3 -l authPriv -u usr-sha-aes -a SHA -A authkey1 -x AES -X privkey1 -ObentU 195.218.195.228:161 1.3.6.1.2.1.1.1.0
"""#
from pysnmp.entity import engine, config
from pysnmp.carrier.asyncore.dgram import udp
from pysnmp.entity.rfc3413 import cmdgen
# Create SNMP engine instance
snmpEngine = engine.SnmpEngine()
#
# SNMPv3/USM setup
#
# user: usr-sha-aes, auth: SHA, priv AES
config.addV3User(
snmpEngine, 'usr-sha-aes',
config.usmHMACSHAAuthProtocol, 'authkey1',
config.usmAesCfb128Protocol, 'privkey1'
)
config.addTargetParams(snmpEngine, 'my-creds', 'usr-sha-aes', 'authPriv')
#
# Setup transport endpoint and bind it with security settings yielding
# a target name
#
# UDP/IPv4
config.addTransport(
snmpEngine,
udp.domainName,
udp.UdpSocketTransport().openClientMode()
)
config.addTargetAddr(
snmpEngine, 'my-router',
udp.domainName, ('195.218.195.228', 161),
'my-creds'
)
# Error/response receiver
def cbFun(snmpEngine, sendRequestHandle, errorIndication,
errorStatus, errorIndex, varBinds, cbCtx):
if errorIndication:
print(errorIndication)
elif errorStatus:
print('%s at %s' % (
errorStatus.prettyPrint(),
errorIndex and varBinds[int(errorIndex)-1][0] or '?'
)
)
else:
for oid, val in varBinds:
print('%s = %s' % (oid.prettyPrint(), val.prettyPrint()))
# Prepare and send a request message
cmdgen.GetCommandGenerator().sendVarBinds(
snmpEngine,
'my-router',
None, '', # contextEngineId, contextName
[ ((1,3,6,1,2,1,1,1,0), None) ],
cbFun
)
# Run I/O dispatcher which would send pending queries and process responses
snmpEngine.transportDispatcher.runDispatcher()
config.delTransport(
snmpEngine,
udp.domainName
).closeTransport()
|
